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-rw-r--r--drivers/char/generic_nvram.c21
-rw-r--r--drivers/char/hpet.c2
-rw-r--r--drivers/char/hw_random/Kconfig1
-rw-r--r--drivers/char/hw_random/core.c6
-rw-r--r--drivers/char/hw_random/omap3-rom-rng.c13
-rw-r--r--drivers/char/hw_random/via-rng.c5
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c7
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c31
-rw-r--r--drivers/char/ipmi/ipmi_ssif.c1
-rw-r--r--drivers/char/mbcs.c28
-rw-r--r--drivers/char/mem.c4
-rw-r--r--drivers/char/mspec.c15
-rw-r--r--drivers/char/nvram.c18
-rw-r--r--drivers/char/nwflash.c31
-rw-r--r--drivers/char/ps3flash.c4
-rw-r--r--drivers/char/random.c22
-rw-r--r--drivers/char/raw.c2
-rw-r--r--drivers/char/tpm/tpm-interface.c23
-rw-r--r--drivers/char/tpm/tpm.h11
-rw-r--r--drivers/char/tpm/tpm2-cmd.c60
-rw-r--r--drivers/char/tpm/tpm_crb.c14
-rw-r--r--drivers/char/tpm/tpm_ibmvtpm.c22
-rw-r--r--drivers/char/tpm/tpm_ibmvtpm.h1
-rw-r--r--drivers/char/tpm/tpm_tis.c256
24 files changed, 291 insertions, 307 deletions
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index 6c4f4b5a9..073db9558 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -20,6 +20,7 @@
#include <linux/fcntl.h>
#include <linux/init.h>
#include <linux/mutex.h>
+#include <linux/pagemap.h>
#include <asm/uaccess.h>
#include <asm/nvram.h>
#ifdef CONFIG_PPC_PMAC
@@ -33,24 +34,8 @@ static ssize_t nvram_len;
static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
{
- switch (origin) {
- case 0:
- break;
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += nvram_len;
- break;
- default:
- offset = -1;
- }
- if (offset < 0)
- return -EINVAL;
-
- file->f_pos = offset;
-
- return file->f_pos;
+ return generic_file_llseek_size(file, offset, origin,
+ MAX_LFS_FILESIZE, nvram_len);
}
static ssize_t read_nvram(struct file *file, char __user *buf,
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 240b6cf1d..be54e5331 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -42,7 +42,7 @@
/*
* The High Precision Event Timer driver.
* This driver is closely modelled after the rtc.c driver.
- * http://www.intel.com/hardwaredesign/hpetspec_1.pdf
+ * See HPET spec revision 1.
*/
#define HPET_USER_FREQ (64)
#define HPET_DRIFT (500)
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index dbf227194..ff00331bf 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -372,6 +372,7 @@ config HW_RANDOM_XGENE
config HW_RANDOM_STM32
tristate "STMicroelectronics STM32 random number generator"
depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST)
+ depends on HAS_IOMEM
help
This driver provides kernel-side support for the Random Number
Generator hardware found on STM32 microcontrollers.
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 6f497aa1b..9203f2d13 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -238,7 +238,10 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
goto out;
}
- mutex_lock(&reading_mutex);
+ if (mutex_lock_interruptible(&reading_mutex)) {
+ err = -ERESTARTSYS;
+ goto out_put;
+ }
if (!data_avail) {
bytes_read = rng_get_data(rng, rng_buffer,
rng_buffer_size(),
@@ -288,6 +291,7 @@ out:
out_unlock_reading:
mutex_unlock(&reading_mutex);
+out_put:
put_rng(rng);
goto out;
}
diff --git a/drivers/char/hw_random/omap3-rom-rng.c b/drivers/char/hw_random/omap3-rom-rng.c
index a405cdcd8..8da14f1a1 100644
--- a/drivers/char/hw_random/omap3-rom-rng.c
+++ b/drivers/char/hw_random/omap3-rom-rng.c
@@ -17,7 +17,7 @@
#include <linux/init.h>
#include <linux/random.h>
#include <linux/hw_random.h>
-#include <linux/timer.h>
+#include <linux/workqueue.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/platform_device.h>
@@ -29,11 +29,11 @@
/* param1: ptr, param2: count, param3: flag */
static u32 (*omap3_rom_rng_call)(u32, u32, u32);
-static struct timer_list idle_timer;
+static struct delayed_work idle_work;
static int rng_idle;
static struct clk *rng_clk;
-static void omap3_rom_rng_idle(unsigned long data)
+static void omap3_rom_rng_idle(struct work_struct *work)
{
int r;
@@ -51,7 +51,7 @@ static int omap3_rom_rng_get_random(void *buf, unsigned int count)
u32 r;
u32 ptr;
- del_timer_sync(&idle_timer);
+ cancel_delayed_work_sync(&idle_work);
if (rng_idle) {
clk_prepare_enable(rng_clk);
r = omap3_rom_rng_call(0, 0, RNG_GEN_PRNG_HW_INIT);
@@ -65,7 +65,7 @@ static int omap3_rom_rng_get_random(void *buf, unsigned int count)
ptr = virt_to_phys(buf);
r = omap3_rom_rng_call(ptr, count, RNG_GEN_HW);
- mod_timer(&idle_timer, jiffies + msecs_to_jiffies(500));
+ schedule_delayed_work(&idle_work, msecs_to_jiffies(500));
if (r != 0)
return -EINVAL;
return 0;
@@ -102,7 +102,7 @@ static int omap3_rom_rng_probe(struct platform_device *pdev)
return -EINVAL;
}
- setup_timer(&idle_timer, omap3_rom_rng_idle, 0);
+ INIT_DELAYED_WORK(&idle_work, omap3_rom_rng_idle);
rng_clk = devm_clk_get(&pdev->dev, "ick");
if (IS_ERR(rng_clk)) {
pr_err("unable to get RNG clock\n");
@@ -118,6 +118,7 @@ static int omap3_rom_rng_probe(struct platform_device *pdev)
static int omap3_rom_rng_remove(struct platform_device *pdev)
{
+ cancel_delayed_work_sync(&idle_work);
hwrng_unregister(&omap3_rom_rng_ops);
clk_disable_unprepare(rng_clk);
return 0;
diff --git a/drivers/char/hw_random/via-rng.c b/drivers/char/hw_random/via-rng.c
index 0c98a9d51..44ce80606 100644
--- a/drivers/char/hw_random/via-rng.c
+++ b/drivers/char/hw_random/via-rng.c
@@ -140,7 +140,7 @@ static int via_rng_init(struct hwrng *rng)
* RNG configuration like it used to be the case in this
* register */
if ((c->x86 == 6) && (c->x86_model >= 0x0f)) {
- if (!cpu_has_xstore_enabled) {
+ if (!boot_cpu_has(X86_FEATURE_XSTORE_EN)) {
pr_err(PFX "can't enable hardware RNG "
"if XSTORE is not enabled\n");
return -ENODEV;
@@ -200,8 +200,9 @@ static int __init mod_init(void)
{
int err;
- if (!cpu_has_xstore)
+ if (!boot_cpu_has(X86_FEATURE_XSTORE))
return -ENODEV;
+
pr_info("VIA RNG detected\n");
err = hwrng_register(&via_rng);
if (err) {
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index e3536da05..94fb407d8 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -472,9 +472,10 @@ static DEFINE_MUTEX(smi_watchers_mutex);
#define ipmi_get_stat(intf, stat) \
((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat]))
-static char *addr_src_to_str[] = { "invalid", "hotmod", "hardcoded", "SPMI",
- "ACPI", "SMBIOS", "PCI",
- "device-tree", "default" };
+static const char * const addr_src_to_str[] = {
+ "invalid", "hotmod", "hardcoded", "SPMI", "ACPI", "SMBIOS", "PCI",
+ "device-tree", "default"
+};
const char *ipmi_addr_src_to_str(enum ipmi_addr_src src)
{
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 4cc72fa01..7fddd8696 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -68,6 +68,7 @@
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/acpi.h>
#ifdef CONFIG_PARISC
#include <asm/hardware.h> /* for register_parisc_driver() stuff */
@@ -105,7 +106,8 @@ enum si_intf_state {
enum si_type {
SI_KCS, SI_SMIC, SI_BT
};
-static char *si_to_str[] = { "kcs", "smic", "bt" };
+
+static const char * const si_to_str[] = { "kcs", "smic", "bt" };
#define DEVICE_NAME "ipmi_si"
@@ -1341,7 +1343,7 @@ static unsigned int num_slave_addrs;
#define IPMI_IO_ADDR_SPACE 0
#define IPMI_MEM_ADDR_SPACE 1
-static char *addr_space_to_str[] = { "i/o", "mem" };
+static const char * const addr_space_to_str[] = { "i/o", "mem" };
static int hotmod_handler(const char *val, struct kernel_param *kp);
@@ -1723,27 +1725,31 @@ static int mem_setup(struct smi_info *info)
*/
enum hotmod_op { HM_ADD, HM_REMOVE };
struct hotmod_vals {
- char *name;
- int val;
+ const char *name;
+ const int val;
};
-static struct hotmod_vals hotmod_ops[] = {
+
+static const struct hotmod_vals hotmod_ops[] = {
{ "add", HM_ADD },
{ "remove", HM_REMOVE },
{ NULL }
};
-static struct hotmod_vals hotmod_si[] = {
+
+static const struct hotmod_vals hotmod_si[] = {
{ "kcs", SI_KCS },
{ "smic", SI_SMIC },
{ "bt", SI_BT },
{ NULL }
};
-static struct hotmod_vals hotmod_as[] = {
+
+static const struct hotmod_vals hotmod_as[] = {
{ "mem", IPMI_MEM_ADDR_SPACE },
{ "i/o", IPMI_IO_ADDR_SPACE },
{ NULL }
};
-static int parse_str(struct hotmod_vals *v, int *val, char *name, char **curr)
+static int parse_str(const struct hotmod_vals *v, int *val, char *name,
+ char **curr)
{
char *s;
int i;
@@ -2049,8 +2055,6 @@ static int hardcode_find_bmc(void)
#ifdef CONFIG_ACPI
-#include <linux/acpi.h>
-
/*
* Once we get an ACPI failure, we don't try any more, because we go
* through the tables sequentially. Once we don't find a table, there
@@ -2554,7 +2558,6 @@ static void ipmi_pci_remove(struct pci_dev *pdev)
{
struct smi_info *info = pci_get_drvdata(pdev);
cleanup_one_si(info);
- pci_disable_device(pdev);
}
static const struct pci_device_id ipmi_pci_devices[] = {
@@ -2870,7 +2873,7 @@ static int ipmi_parisc_remove(struct parisc_device *dev)
return 0;
}
-static struct parisc_device_id ipmi_parisc_tbl[] = {
+static const struct parisc_device_id ipmi_parisc_tbl[] = {
{ HPHW_MC, HVERSION_REV_ANY_ID, 0x004, 0xC0 },
{ 0, }
};
@@ -3444,8 +3447,8 @@ static inline void wait_for_timer_and_thread(struct smi_info *smi_info)
static const struct ipmi_default_vals
{
- int type;
- int port;
+ const int type;
+ const int port;
} ipmi_defaults[] =
{
{ .type = SI_KCS, .port = 0xca2 },
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 90e624662..5f1c3d08b 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -1959,7 +1959,6 @@ MODULE_DEVICE_TABLE(i2c, ssif_id);
static struct i2c_driver ssif_i2c_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
- .owner = THIS_MODULE,
.name = DEVICE_NAME
},
.probe = ssif_probe,
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index e5d3e3f7a..67d426470 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -26,6 +26,7 @@
#include <linux/uio.h>
#include <linux/mutex.h>
#include <linux/slab.h>
+#include <linux/pagemap.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -451,31 +452,8 @@ mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * o
static loff_t mbcs_sram_llseek(struct file * filp, loff_t off, int whence)
{
- loff_t newpos;
-
- switch (whence) {
- case SEEK_SET:
- newpos = off;
- break;
-
- case SEEK_CUR:
- newpos = filp->f_pos + off;
- break;
-
- case SEEK_END:
- newpos = MBCS_SRAM_SIZE + off;
- break;
-
- default: /* can't happen */
- return -EINVAL;
- }
-
- if (newpos < 0)
- return -EINVAL;
-
- filp->f_pos = newpos;
-
- return newpos;
+ return generic_file_llseek_size(filp, off, whence, MAX_LFS_FILESIZE,
+ MBCS_SRAM_SIZE);
}
static uint64_t mbcs_pioaddr(struct mbcs_soft *soft, uint64_t offset)
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 6b1721f97..4f6f94c43 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -689,7 +689,7 @@ static loff_t memory_lseek(struct file *file, loff_t offset, int orig)
{
loff_t ret;
- mutex_lock(&file_inode(file)->i_mutex);
+ inode_lock(file_inode(file));
switch (orig) {
case SEEK_CUR:
offset += file->f_pos;
@@ -706,7 +706,7 @@ static loff_t memory_lseek(struct file *file, loff_t offset, int orig)
default:
ret = -EINVAL;
}
- mutex_unlock(&file_inode(file)->i_mutex);
+ inode_unlock(file_inode(file));
return ret;
}
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index f1d7fa45c..f3f92d5fc 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -93,14 +93,11 @@ struct vma_data {
spinlock_t lock; /* Serialize access to this structure. */
int count; /* Number of pages allocated. */
enum mspec_page_type type; /* Type of pages allocated. */
- int flags; /* See VMD_xxx below. */
unsigned long vm_start; /* Original (unsplit) base. */
unsigned long vm_end; /* Original (unsplit) end. */
unsigned long maddr[0]; /* Array of MSPEC addresses. */
};
-#define VMD_VMALLOCED 0x1 /* vmalloc'd rather than kmalloc'd */
-
/* used on shub2 to clear FOP cache in the HUB */
static unsigned long scratch_page[MAX_NUMNODES];
#define SH2_AMO_CACHE_ENTRIES 4
@@ -185,10 +182,7 @@ mspec_close(struct vm_area_struct *vma)
"failed to zero page %ld\n", my_page);
}
- if (vdata->flags & VMD_VMALLOCED)
- vfree(vdata);
- else
- kfree(vdata);
+ kvfree(vdata);
}
/*
@@ -256,7 +250,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
enum mspec_page_type type)
{
struct vma_data *vdata;
- int pages, vdata_size, flags = 0;
+ int pages, vdata_size;
if (vma->vm_pgoff != 0)
return -EINVAL;
@@ -271,16 +265,13 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
vdata_size = sizeof(struct vma_data) + pages * sizeof(long);
if (vdata_size <= PAGE_SIZE)
vdata = kzalloc(vdata_size, GFP_KERNEL);
- else {
+ else
vdata = vzalloc(vdata_size);
- flags = VMD_VMALLOCED;
- }
if (!vdata)
return -ENOMEM;
vdata->vm_start = vma->vm_start;
vdata->vm_end = vma->vm_end;
- vdata->flags = flags;
vdata->type = type;
spin_lock_init(&vdata->lock);
atomic_set(&vdata->refcnt, 1);
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 97c2d8d43..01292328a 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -110,6 +110,7 @@
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/mutex.h>
+#include <linux/pagemap.h>
static DEFINE_MUTEX(nvram_mutex);
@@ -213,21 +214,8 @@ void nvram_set_checksum(void)
static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
{
- switch (origin) {
- case 0:
- /* nothing to do */
- break;
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += NVRAM_BYTES;
- break;
- default:
- return -EINVAL;
- }
-
- return (offset >= 0) ? (file->f_pos = offset) : -EINVAL;
+ return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
+ NVRAM_BYTES);
}
static ssize_t nvram_read(struct file *file, char __user *buf,
diff --git a/drivers/char/nwflash.c b/drivers/char/nwflash.c
index e371480d3..dbe598de9 100644
--- a/drivers/char/nwflash.c
+++ b/drivers/char/nwflash.c
@@ -277,36 +277,7 @@ static loff_t flash_llseek(struct file *file, loff_t offset, int orig)
printk(KERN_DEBUG "flash_llseek: offset=0x%X, orig=0x%X.\n",
(unsigned int) offset, orig);
- switch (orig) {
- case 0:
- if (offset < 0) {
- ret = -EINVAL;
- break;
- }
-
- if ((unsigned int) offset > gbFlashSize) {
- ret = -EINVAL;
- break;
- }
-
- file->f_pos = (unsigned int) offset;
- ret = file->f_pos;
- break;
- case 1:
- if ((file->f_pos + offset) > gbFlashSize) {
- ret = -EINVAL;
- break;
- }
- if ((file->f_pos + offset) < 0) {
- ret = -EINVAL;
- break;
- }
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- default:
- ret = -EINVAL;
- }
+ ret = no_seek_end_llseek_size(file, offset, orig, gbFlashSize);
mutex_unlock(&flash_mutex);
return ret;
}
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 0b311fa27..b526dc15c 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -290,9 +290,9 @@ static int ps3flash_fsync(struct file *file, loff_t start, loff_t end, int datas
{
struct inode *inode = file_inode(file);
int err;
- mutex_lock(&inode->i_mutex);
+ inode_lock(inode);
err = ps3flash_writeback(ps3flash_dev);
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
return err;
}
diff --git a/drivers/char/random.c b/drivers/char/random.c
index d0da5d852..b583e5336 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1819,6 +1819,28 @@ unsigned int get_random_int(void)
EXPORT_SYMBOL(get_random_int);
/*
+ * Same as get_random_int(), but returns unsigned long.
+ */
+unsigned long get_random_long(void)
+{
+ __u32 *hash;
+ unsigned long ret;
+
+ if (arch_get_random_long(&ret))
+ return ret;
+
+ hash = get_cpu_var(get_random_int_hash);
+
+ hash[0] += current->pid + jiffies + random_get_entropy();
+ md5_transform(hash, random_int_secret);
+ ret = *(unsigned long *)hash;
+ put_cpu_var(get_random_int_hash);
+
+ return ret;
+}
+EXPORT_SYMBOL(get_random_long);
+
+/*
* randomize_range() returns a start address such that
*
* [...... <range> .....]
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 60316fbaf..9b9809b70 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -71,7 +71,7 @@ static int raw_open(struct inode *inode, struct file *filp)
err = -ENODEV;
if (!bdev)
goto out;
- igrab(bdev->bd_inode);
+ bdgrab(bdev);
err = blkdev_get(bdev, filp->f_mode | FMODE_EXCL, raw_open);
if (err)
goto out;
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index c50637db3..e2fa89c88 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -310,10 +310,12 @@ unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip,
{
int duration_idx = TPM_UNDEFINED;
int duration = 0;
- u8 category = (ordinal >> 24) & 0xFF;
- if ((category == TPM_PROTECTED_COMMAND && ordinal < TPM_MAX_ORDINAL) ||
- (category == TPM_CONNECTION_COMMAND && ordinal < TSC_MAX_ORDINAL))
+ /*
+ * We only have a duration table for protected commands, where the upper
+ * 16 bits are 0. For the few other ordinals the fallback will be used.
+ */
+ if (ordinal < TPM_MAX_ORDINAL)
duration_idx = tpm_ordinal_duration[ordinal];
if (duration_idx != TPM_UNDEFINED)
@@ -501,6 +503,21 @@ int tpm_get_timeouts(struct tpm_chip *chip)
struct duration_t *duration_cap;
ssize_t rc;
+ if (chip->flags & TPM_CHIP_FLAG_TPM2) {
+ /* Fixed timeouts for TPM2 */
+ chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
+ chip->vendor.timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
+ chip->vendor.timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
+ chip->vendor.timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
+ chip->vendor.duration[TPM_SHORT] =
+ msecs_to_jiffies(TPM2_DURATION_SHORT);
+ chip->vendor.duration[TPM_MEDIUM] =
+ msecs_to_jiffies(TPM2_DURATION_MEDIUM);
+ chip->vendor.duration[TPM_LONG] =
+ msecs_to_jiffies(TPM2_DURATION_LONG);
+ return 0;
+ }
+
tpm_cmd.header.in = tpm_getcap_header;
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index a4257a329..542a80cbf 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -83,16 +83,20 @@ enum tpm2_structures {
};
enum tpm2_return_codes {
- TPM2_RC_INITIALIZE = 0x0100,
- TPM2_RC_TESTING = 0x090A,
+ TPM2_RC_HASH = 0x0083, /* RC_FMT1 */
+ TPM2_RC_INITIALIZE = 0x0100, /* RC_VER1 */
TPM2_RC_DISABLED = 0x0120,
+ TPM2_RC_TESTING = 0x090A, /* RC_WARN */
};
enum tpm2_algorithms {
TPM2_ALG_SHA1 = 0x0004,
TPM2_ALG_KEYEDHASH = 0x0008,
TPM2_ALG_SHA256 = 0x000B,
- TPM2_ALG_NULL = 0x0010
+ TPM2_ALG_SHA384 = 0x000C,
+ TPM2_ALG_SHA512 = 0x000D,
+ TPM2_ALG_NULL = 0x0010,
+ TPM2_ALG_SM3_256 = 0x0012,
};
enum tpm2_command_codes {
@@ -138,7 +142,6 @@ struct tpm_vendor_specific {
unsigned long base; /* TPM base address */
int irq;
- int probed_irq;
int region_size;
int have_region;
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index c12130485..45a634016 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -16,6 +16,7 @@
*/
#include "tpm.h"
+#include <crypto/hash_info.h>
#include <keys/trusted-type.h>
enum tpm2_object_attributes {
@@ -104,6 +105,19 @@ struct tpm2_cmd {
union tpm2_cmd_params params;
} __packed;
+struct tpm2_hash {
+ unsigned int crypto_id;
+ unsigned int tpm_id;
+};
+
+static struct tpm2_hash tpm2_hash_map[] = {
+ {HASH_ALGO_SHA1, TPM2_ALG_SHA1},
+ {HASH_ALGO_SHA256, TPM2_ALG_SHA256},
+ {HASH_ALGO_SHA384, TPM2_ALG_SHA384},
+ {HASH_ALGO_SHA512, TPM2_ALG_SHA512},
+ {HASH_ALGO_SM3_256, TPM2_ALG_SM3_256},
+};
+
/*
* Array with one entry per ordinal defining the maximum amount
* of time the chip could take to return the result. The values
@@ -429,8 +443,20 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
{
unsigned int blob_len;
struct tpm_buf buf;
+ u32 hash;
+ int i;
int rc;
+ for (i = 0; i < ARRAY_SIZE(tpm2_hash_map); i++) {
+ if (options->hash == tpm2_hash_map[i].crypto_id) {
+ hash = tpm2_hash_map[i].tpm_id;
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(tpm2_hash_map))
+ return -EINVAL;
+
rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_CREATE);
if (rc)
return rc;
@@ -452,12 +478,26 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
tpm_buf_append_u8(&buf, payload->migratable);
/* public */
- tpm_buf_append_u16(&buf, 14);
+ if (options->policydigest)
+ tpm_buf_append_u16(&buf, 14 + options->digest_len);
+ else
+ tpm_buf_append_u16(&buf, 14);
tpm_buf_append_u16(&buf, TPM2_ALG_KEYEDHASH);
- tpm_buf_append_u16(&buf, TPM2_ALG_SHA256);
- tpm_buf_append_u32(&buf, TPM2_ATTR_USER_WITH_AUTH);
- tpm_buf_append_u16(&buf, 0); /* policy digest size */
+ tpm_buf_append_u16(&buf, hash);
+
+ /* policy */
+ if (options->policydigest) {
+ tpm_buf_append_u32(&buf, 0);
+ tpm_buf_append_u16(&buf, options->digest_len);
+ tpm_buf_append(&buf, options->policydigest,
+ options->digest_len);
+ } else {
+ tpm_buf_append_u32(&buf, TPM2_ATTR_USER_WITH_AUTH);
+ tpm_buf_append_u16(&buf, 0);
+ }
+
+ /* public parameters */
tpm_buf_append_u16(&buf, TPM2_ALG_NULL);
tpm_buf_append_u16(&buf, 0);
@@ -488,8 +528,12 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
out:
tpm_buf_destroy(&buf);
- if (rc > 0)
- rc = -EPERM;
+ if (rc > 0) {
+ if ((rc & TPM2_RC_HASH) == TPM2_RC_HASH)
+ rc = -EINVAL;
+ else
+ rc = -EPERM;
+ }
return rc;
}
@@ -583,7 +627,9 @@ static int tpm2_unseal(struct tpm_chip *chip,
return rc;
tpm_buf_append_u32(&buf, blob_handle);
- tpm2_buf_append_auth(&buf, TPM2_RS_PW,
+ tpm2_buf_append_auth(&buf,
+ options->policyhandle ?
+ options->policyhandle : TPM2_RS_PW,
NULL /* nonce */, 0,
0 /* session_attributes */,
options->blobauth /* hmac */,
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index 4bb9727c1..8342cf51f 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -284,17 +284,9 @@ static int crb_acpi_add(struct acpi_device *device)
chip->vendor.priv = priv;
- /* Default timeouts and durations */
- chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
- chip->vendor.timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
- chip->vendor.timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
- chip->vendor.timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
- chip->vendor.duration[TPM_SHORT] =
- msecs_to_jiffies(TPM2_DURATION_SHORT);
- chip->vendor.duration[TPM_MEDIUM] =
- msecs_to_jiffies(TPM2_DURATION_MEDIUM);
- chip->vendor.duration[TPM_LONG] =
- msecs_to_jiffies(TPM2_DURATION_LONG);
+ rc = tpm_get_timeouts(chip);
+ if (rc)
+ return rc;
chip->acpi_dev_handle = device->handle;
diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
index 3e6a22658..b0a9a9e34 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -90,7 +90,7 @@ static int tpm_ibmvtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count)
return 0;
}
- sig = wait_event_interruptible(ibmvtpm->wq, ibmvtpm->res_len != 0);
+ sig = wait_event_interruptible(ibmvtpm->wq, !ibmvtpm->tpm_processing_cmd);
if (sig)
return -EINTR;
@@ -125,7 +125,7 @@ static int tpm_ibmvtpm_send(struct tpm_chip *chip, u8 *buf, size_t count)
struct ibmvtpm_dev *ibmvtpm;
struct ibmvtpm_crq crq;
__be64 *word = (__be64 *)&crq;
- int rc;
+ int rc, sig;
ibmvtpm = (struct ibmvtpm_dev *)TPM_VPRIV(chip);
@@ -141,18 +141,35 @@ static int tpm_ibmvtpm_send(struct tpm_chip *chip, u8 *buf, size_t count)
return -EIO;
}
+ if (ibmvtpm->tpm_processing_cmd) {
+ dev_info(ibmvtpm->dev,
+ "Need to wait for TPM to finish\n");
+ /* wait for previous command to finish */
+ sig = wait_event_interruptible(ibmvtpm->wq, !ibmvtpm->tpm_processing_cmd);
+ if (sig)
+ return -EINTR;
+ }
+
spin_lock(&ibmvtpm->rtce_lock);
+ ibmvtpm->res_len = 0;
memcpy((void *)ibmvtpm->rtce_buf, (void *)buf, count);
crq.valid = (u8)IBMVTPM_VALID_CMD;
crq.msg = (u8)VTPM_TPM_COMMAND;
crq.len = cpu_to_be16(count);
crq.data = cpu_to_be32(ibmvtpm->rtce_dma_handle);
+ /*
+ * set the processing flag before the Hcall, since we may get the
+ * result (interrupt) before even being able to check rc.
+ */
+ ibmvtpm->tpm_processing_cmd = true;
+
rc = ibmvtpm_send_crq(ibmvtpm->vdev, be64_to_cpu(word[0]),
be64_to_cpu(word[1]));
if (rc != H_SUCCESS) {
dev_err(ibmvtpm->dev, "tpm_ibmvtpm_send failed rc=%d\n", rc);
rc = 0;
+ ibmvtpm->tpm_processing_cmd = false;
} else
rc = count;
@@ -515,6 +532,7 @@ static void ibmvtpm_crq_process(struct ibmvtpm_crq *crq,
case VTPM_TPM_COMMAND_RES:
/* len of the data in rtce buffer */
ibmvtpm->res_len = be16_to_cpu(crq->len);
+ ibmvtpm->tpm_processing_cmd = false;
wake_up_interruptible(&ibmvtpm->wq);
return;
default:
diff --git a/drivers/char/tpm/tpm_ibmvtpm.h b/drivers/char/tpm/tpm_ibmvtpm.h
index 6af928905..91dfe766d 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.h
+++ b/drivers/char/tpm/tpm_ibmvtpm.h
@@ -45,6 +45,7 @@ struct ibmvtpm_dev {
wait_queue_head_t wq;
u16 res_len;
u32 vtpm_version;
+ bool tpm_processing_cmd;
};
#define CRQ_RES_BUF_SIZE PAGE_SIZE
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 65f7eecc4..8a3509cb1 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -401,7 +401,7 @@ static void disable_interrupts(struct tpm_chip *chip)
iowrite32(intmask,
chip->vendor.iobase +
TPM_INT_ENABLE(chip->vendor.locality));
- free_irq(chip->vendor.irq, chip);
+ devm_free_irq(chip->pdev, chip->vendor.irq, chip);
chip->vendor.irq = 0;
}
@@ -461,11 +461,8 @@ static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len)
chip->vendor.irq = irq;
if (!priv->irq_tested)
msleep(1);
- if (!priv->irq_tested) {
+ if (!priv->irq_tested)
disable_interrupts(chip);
- dev_err(chip->pdev,
- FW_BUG "TPM interrupt not working, polling instead\n");
- }
priv->irq_tested = true;
return rc;
}
@@ -570,26 +567,6 @@ static const struct tpm_class_ops tpm_tis = {
.req_canceled = tpm_tis_req_canceled,
};
-static irqreturn_t tis_int_probe(int irq, void *dev_id)
-{
- struct tpm_chip *chip = dev_id;
- u32 interrupt;
-
- interrupt = ioread32(chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality));
-
- if (interrupt == 0)
- return IRQ_NONE;
-
- chip->vendor.probed_irq = irq;
-
- /* Clear interrupts handled with TPM_EOI */
- iowrite32(interrupt,
- chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality));
- return IRQ_HANDLED;
-}
-
static irqreturn_t tis_int_handler(int dummy, void *dev_id)
{
struct tpm_chip *chip = dev_id;
@@ -622,6 +599,84 @@ static irqreturn_t tis_int_handler(int dummy, void *dev_id)
return IRQ_HANDLED;
}
+/* Register the IRQ and issue a command that will cause an interrupt. If an
+ * irq is seen then leave the chip setup for IRQ operation, otherwise reverse
+ * everything and leave in polling mode. Returns 0 on success.
+ */
+static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask,
+ int flags, int irq)
+{
+ struct priv_data *priv = chip->vendor.priv;
+ u8 original_int_vec;
+
+ if (devm_request_irq(chip->pdev, irq, tis_int_handler, flags,
+ chip->devname, chip) != 0) {
+ dev_info(chip->pdev, "Unable to request irq: %d for probe\n",
+ irq);
+ return -1;
+ }
+ chip->vendor.irq = irq;
+
+ original_int_vec = ioread8(chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
+ iowrite8(irq,
+ chip->vendor.iobase + TPM_INT_VECTOR(chip->vendor.locality));
+
+ /* Clear all existing */
+ iowrite32(ioread32(chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality)),
+ chip->vendor.iobase + TPM_INT_STATUS(chip->vendor.locality));
+
+ /* Turn on */
+ iowrite32(intmask | TPM_GLOBAL_INT_ENABLE,
+ chip->vendor.iobase + TPM_INT_ENABLE(chip->vendor.locality));
+
+ priv->irq_tested = false;
+
+ /* Generate an interrupt by having the core call through to
+ * tpm_tis_send
+ */
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ tpm2_gen_interrupt(chip);
+ else
+ tpm_gen_interrupt(chip);
+
+ /* tpm_tis_send will either confirm the interrupt is working or it
+ * will call disable_irq which undoes all of the above.
+ */
+ if (!chip->vendor.irq) {
+ iowrite8(original_int_vec,
+ chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Try to find the IRQ the TPM is using. This is for legacy x86 systems that
+ * do not have ACPI/etc. We typically expect the interrupt to be declared if
+ * present.
+ */
+static void tpm_tis_probe_irq(struct tpm_chip *chip, u32 intmask)
+{
+ u8 original_int_vec;
+ int i;
+
+ original_int_vec = ioread8(chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
+
+ if (!original_int_vec) {
+ if (IS_ENABLED(CONFIG_X86))
+ for (i = 3; i <= 15; i++)
+ if (!tpm_tis_probe_irq_single(chip, intmask, 0,
+ i))
+ return;
+ } else if (!tpm_tis_probe_irq_single(chip, intmask, 0,
+ original_int_vec))
+ return;
+}
+
static bool interrupts = true;
module_param(interrupts, bool, 0444);
MODULE_PARM_DESC(interrupts, "Enable interrupts");
@@ -644,8 +699,7 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
acpi_handle acpi_dev_handle)
{
u32 vendor, intfcaps, intmask;
- int rc, i, irq_s, irq_e, probe;
- int irq_r = -1;
+ int rc, probe;
struct tpm_chip *chip;
struct priv_data *priv;
@@ -677,6 +731,15 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
goto out_err;
}
+ /* Take control of the TPM's interrupt hardware and shut it off */
+ intmask = ioread32(chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+ intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT |
+ TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT;
+ intmask &= ~TPM_GLOBAL_INT_ENABLE;
+ iowrite32(intmask,
+ chip->vendor.iobase + TPM_INT_ENABLE(chip->vendor.locality));
+
if (request_locality(chip, 0) != 0) {
rc = -ENODEV;
goto out_err;
@@ -731,126 +794,31 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
if (intfcaps & TPM_INTF_DATA_AVAIL_INT)
dev_dbg(dev, "\tData Avail Int Support\n");
+ /* Very early on issue a command to the TPM in polling mode to make
+ * sure it works. May as well use that command to set the proper
+ * timeouts for the driver.
+ */
+ if (tpm_get_timeouts(chip)) {
+ dev_err(dev, "Could not get TPM timeouts and durations\n");
+ rc = -ENODEV;
+ goto out_err;
+ }
+
/* INTERRUPT Setup */
init_waitqueue_head(&chip->vendor.read_queue);
init_waitqueue_head(&chip->vendor.int_queue);
-
- intmask =
- ioread32(chip->vendor.iobase +
- TPM_INT_ENABLE(chip->vendor.locality));
-
- intmask |= TPM_INTF_CMD_READY_INT
- | TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_DATA_AVAIL_INT
- | TPM_INTF_STS_VALID_INT;
-
- iowrite32(intmask,
- chip->vendor.iobase +
- TPM_INT_ENABLE(chip->vendor.locality));
- if (interrupts)
- chip->vendor.irq = tpm_info->irq;
- if (interrupts && !chip->vendor.irq) {
- irq_s =
- ioread8(chip->vendor.iobase +
- TPM_INT_VECTOR(chip->vendor.locality));
- irq_r = irq_s;
- if (irq_s) {
- irq_e = irq_s;
- } else {
- irq_s = 3;
- irq_e = 15;
- }
-
- for (i = irq_s; i <= irq_e && chip->vendor.irq == 0; i++) {
- iowrite8(i, chip->vendor.iobase +
- TPM_INT_VECTOR(chip->vendor.locality));
- if (devm_request_irq
- (dev, i, tis_int_probe, IRQF_SHARED,
- chip->devname, chip) != 0) {
- dev_info(chip->pdev,
- "Unable to request irq: %d for probe\n",
- i);
- continue;
- }
-
- /* Clear all existing */
- iowrite32(ioread32
- (chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality)),
- chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality));
-
- /* Turn on */
- iowrite32(intmask | TPM_GLOBAL_INT_ENABLE,
- chip->vendor.iobase +
- TPM_INT_ENABLE(chip->vendor.locality));
-
- chip->vendor.probed_irq = 0;
-
- /* Generate Interrupts */
- if (chip->flags & TPM_CHIP_FLAG_TPM2)
- tpm2_gen_interrupt(chip);
- else
- tpm_gen_interrupt(chip);
-
- chip->vendor.irq = chip->vendor.probed_irq;
-
- /* free_irq will call into tis_int_probe;
- clear all irqs we haven't seen while doing
- tpm_gen_interrupt */
- iowrite32(ioread32
- (chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality)),
- chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality));
-
- /* Turn off */
- iowrite32(intmask,
- chip->vendor.iobase +
- TPM_INT_ENABLE(chip->vendor.locality));
-
- devm_free_irq(dev, i, chip);
- }
+ if (interrupts) {
+ if (tpm_info->irq) {
+ tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED,
+ tpm_info->irq);
+ if (!chip->vendor.irq)
+ dev_err(chip->pdev, FW_BUG
+ "TPM interrupt not working, polling instead\n");
+ } else
+ tpm_tis_probe_irq(chip, intmask);
}
- if (chip->vendor.irq) {
- iowrite8(chip->vendor.irq,
- chip->vendor.iobase +
- TPM_INT_VECTOR(chip->vendor.locality));
- if (devm_request_irq
- (dev, chip->vendor.irq, tis_int_handler, IRQF_SHARED,
- chip->devname, chip) != 0) {
- dev_info(chip->pdev,
- "Unable to request irq: %d for use\n",
- chip->vendor.irq);
- chip->vendor.irq = 0;
- } else {
- /* Clear all existing */
- iowrite32(ioread32
- (chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality)),
- chip->vendor.iobase +
- TPM_INT_STATUS(chip->vendor.locality));
-
- /* Turn on */
- iowrite32(intmask | TPM_GLOBAL_INT_ENABLE,
- chip->vendor.iobase +
- TPM_INT_ENABLE(chip->vendor.locality));
- }
- } else if (irq_r != -1)
- iowrite8(irq_r, chip->vendor.iobase +
- TPM_INT_VECTOR(chip->vendor.locality));
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
- chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
- chip->vendor.timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
- chip->vendor.timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
- chip->vendor.timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
- chip->vendor.duration[TPM_SHORT] =
- msecs_to_jiffies(TPM2_DURATION_SHORT);
- chip->vendor.duration[TPM_MEDIUM] =
- msecs_to_jiffies(TPM2_DURATION_MEDIUM);
- chip->vendor.duration[TPM_LONG] =
- msecs_to_jiffies(TPM2_DURATION_LONG);
-
rc = tpm2_do_selftest(chip);
if (rc == TPM2_RC_INITIALIZE) {
dev_warn(dev, "Firmware has not started TPM\n");
@@ -866,12 +834,6 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
goto out_err;
}
} else {
- if (tpm_get_timeouts(chip)) {
- dev_err(dev, "Could not get TPM timeouts and durations\n");
- rc = -ENODEV;
- goto out_err;
- }
-
if (tpm_do_selftest(chip)) {
dev_err(dev, "TPM self test failed\n");
rc = -ENODEV;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-13 17:27:06 +0000